Questions tagged [jpeg]

JPEG is an adjustable "lossy" compression method commonly used in digital photograph. The most common filename extensions for images using the JPEG format are .jpg and .jpeg. Compare to alternative image formats such as TIFF and the various RAW formats.

Filter by
Sorted by
Tagged with
3
votes
1answer
140 views

Is there a common subset of exif metadata tags for scanned photographs?

I've recently been scanning a collection of photographs into jpeg files. I know how to use tools such as exiftool to examine and change metadata tags. But while I'm easily able to learn the technical ...
1
vote
2answers
52 views

Can jpg be converted to progressive jpg without quality loss?

My understanding of a progressive jpg is that it saves the color information of each pixel in a different order, to create the progressive loading effect. I.e. instead of RGB RGB RGB ..., it's saved ...
0
votes
1answer
63 views

Finding raw & jpeg files in my computer photos library

I have a Panasonic FZ1000 and took some photos on the raw & jpeg setting. On my computer the photos are identified as jpeg, but on my iPad they are identified as both. There is only one file ...
1
vote
4answers
127 views

What is the usefulness and best conversion software of TIFF file format for scanned slides

I will use an external provider to scan 1000+ old slides ("diapositives"), mostly family snapshots made a few decades ago. The provider offers by default standard definition jpg (512 x 340 ...
1
vote
2answers
80 views

How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile?

How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile? I use GIMP 2.10 on Windows 10 Home 64-bit.
1
vote
2answers
64 views

Capture one to export a progressive jpeg?

As far as I can tell, Capture One doesn't have the option to export an image as a progressive jpeg. To get a progressive image, I've been compressing once on export, and compressing again on the ...
2
votes
3answers
1k views

Fast, lossy compressed, 10 bit image format (Or 12 bit or 16 bit)

I'm looking for an image format to keep my photo archive. Currently I'm keeping compressed DNG + 80% quality JPG. JPG is useful because you can easily convert and manage, is small and is fast to read/...
5
votes
4answers
167 views

Is there a way to delete all RAW files if a corresponding JPG file exists?

I'm starting the process of importing hundreds of thousands of photos into a new DAM system that my company purchased. There are 46,000 RAW files (mostly .cr2). We don't need the RAW files anymore. ...
4
votes
6answers
2k views

Is there a way to export from lightroom to multiple formats simultaneously?

I frequently need to photograph my wife's textile works and output the results in several formats. She wants high quality, large jpegs; tiffs; and smallish jpegs for her web site, all of which go into ...
7
votes
3answers
1k views

Is exiftran still needed today for resetting the orientation of JPEG images?

Since more then ten years I use exiftran to rotate images after getting them from the camera. Is this step still needed today? Don't browsers and other image apps rotate the image correctly without ...
1
vote
2answers
1k views

How do I find raw files corresponding to selected JPEGS

I shoot RAW + JPEG on fujifilm cameras and 90% of the time I'm fully content with my jpeg images but a few could use some editing. To save time I would like to cull my photos into three categories: ...
21
votes
11answers
24k views

How to delete JPG files, but only if the matching RAW file exists?

My early (Canon G2) photos are all JPG, but when I got my Nikon D90 I initially shot in JPG, then switched to RAW+JPG, and now I would like to switch to RAW only. I have literally thousands of photos ...
306
votes
16answers
59k views

Good examples of RAW's advantages over JPEG?

I'm curious to see some real examples of where simply capturing the same photo in RAW (and being processed by someone who can do it justice) has significantly improved the photo at the end of the ...
10
votes
4answers
18k views

Do jpgs have “layers”?

I have jpg photos with frames put on them which a friend made for me. I noticed when I open the jpgs though, that the image loads first and then the frame loads on top of it (that is, I can see the ...
13
votes
2answers
2k views

Why does the histogram of an image depends on the software that opened it?

If I open a raw image in Photoshop and Paintshop pro their histograms and their look is different. However, if I open a Jpeg image in both Software, then their histogram and look is the same. What ...
0
votes
1answer
413 views

.jpg photos from the external SD card of Galaxy Grand Prime + display “It appears we don't support this file format” after transferring them to my PC

My Galaxy Grand Prime + phone was running out of space so I transferred all my WhatsApp media to my SD card. After some time (a few hours I think), many of these photos and videos became unviewable. I ...
9
votes
3answers
10k views

Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
15
votes
5answers
16k views

How can I convert an Apple iOS HEIF image into JPEG?

How can I convert an HEIF/HEIC image into a JPEG? Maybe using ImageMagick?
1
vote
1answer
138 views

Why are thumbnails bad, when jpgs are good, with raw processed with darktable?

I'm using darktable to process my raw photos and save the final jpg's. I'm on ubuntu linux. From some of the jpg's, gthumb gets thumbnails which are far lighter than the original jpg, and the same ...
1
vote
1answer
69 views

Different image viewer shows different color (brightness?) of jpg image

I'm not sure if I should ask this question here or not. I've some images, that have a problem, as the screenshot below shows: The softwares are as following (left to right, top to bottom): [qimgv] [...
3
votes
3answers
881 views

Recover broken images that are corrupt

I had some issues with my computer and sent it out for repairs to a reputable dealer. So far everything came back perfect. I sent it in to be cleaned up and to try and recover some photos that were ...
3
votes
2answers
180 views

Convert large database of mixed-format files into screen size jpegs

I am an older photographer with an ever-increasing collectiob of 20,000+ images in folders arranged by year and month. (they are currently catalogues in Lightroom and the bad, non-interesting photos ...
6
votes
1answer
102 views

Why is the night sky photo showing uneven color and strange pattern in background?

Here's straight-out-of-camera JPEG I've shot with Fujifilm XT-2 with following details: f/2.8 15 seconds ISO 3200 XF 16mm f/2.8 R WR Upon closer inspection I noticed: Left area is noisy possibly ...
2
votes
2answers
173 views

Edit in RAW not as good as the Jpeg

I take most of my pictures on mobile, and I use mostly jpeg for the convenience, but I sometimes use RAW because of annoying whites blowout, bizarre clouds or unreal colors. For instance, my sunset ...
3
votes
4answers
261 views

GIMP: Why can I set a higher quality than original image in the “Export Image as JPEG” dialog?

After having read the GIMP Export Image as JPEG section, I still have one understanding issue: Why am I able to select a higher quality value than the one from original image in the export dialog? For ...
0
votes
1answer
114 views

Does a TIFF file using JPEG compression have the same 65535 x 65535 pixel limitation as a JPEG file?

TIFF allows for JPEG compression, among others. While it is not a well-explored option (most people just opt for lossless compression), I am looking to use it as a similar-size alternative to JPEG, ...
1
vote
1answer
126 views

Why does zooming into JPEG images show chunky boundaries and or noise resembling smudges of magenta, yellow and cyan?

What causes this effect? The boundaries look chunky and weird. I never seen this on PNG. I also have noticed this for JPEG images only, not PNG. For example these captcha images. The skies don't ...
0
votes
1answer
305 views

Wrong DNG colors but correct JPG. How can I “transfer” correct colors to the DNG?

I have a Fimi X8 SE drone and it has a RAW DNG (+ JPG) capture mode. The only downside to this is that the DNG files are somehow "broken" because all colors seems to be wrong. Strong magenta ...
2
votes
1answer
148 views

Lightroom: how to not lose quality by exporting a photo from a previously exported photo collection?

I'm thinking to use Lightroom in order to organize catalogues by year (to avoid having large areas of files that I normally have in the cloud and download locally to work them). Having catalogs per ...
2
votes
0answers
97 views

Rating a JPEG in Lightroom Classic 9.2.1 causes the JPEG file date to change to today

I have a full drive of old JPEGs from the early 2000's (Canon A20) that I have added into a LR catalog. I have unchecked the catalog settings "Include Develop settings in metadata inside JPEG, ...
2
votes
1answer
204 views

Why do JPEG and TIFF versions of image look different?

I noticed something that probably is good but looks bad in my opinion. I pixel peeped an image to compare the Jpeg vs Tiff. Both are exported with Lightroom from a raw file. I only changed the file ...
1
vote
0answers
81 views

JPG files - different brightness in viewers

I have a single JPG file. If I open it with IrfanView, it is darker than the same file opened in PhotoShop (or in Firefox). What can cause this? The correct version is the one from Photoshop (or ...
1
vote
4answers
765 views

Should I convert my family pictures from JPEG to PNG?

I have a lot of family pictures saved in Google Drive as JPEGs - not JPEG 2000 - as they were initially acquired. I thought the problem with JPEGs was artifact at sharp edges, which is not too much ...
7
votes
3answers
5k views

Losslessly batch convert many JPEGs to sRGB?

Recently I came across a bunch of weird JPEGs; here's one of them. In Firefox 16.0.2 and ACDSee it looks much more vibrant: However in Internet Explorer 9/MS Paint/Paint.NET 3.5.10 (on Windows 7 64-...
0
votes
2answers
114 views

how to send an edited RAW photo to a lab for processing without it automatically being converted to jpeg & loss of data

How to send an edited RAW photo to a lab for processing without the RAW file automatically being converted to jpeg & loss of data.
1
vote
0answers
60 views

Restoration of a corrupted JPEG file

I wonder if there is any way to restore corrupted JPEG files in my situation. Duting copying of files from camera SDD card I had some kind of problem/mistake with few files, but I was able to repeat ...
9
votes
9answers
49k views

How to convert JPEG to RAW in Photoshop or similar?

I am having a competition in which I have to submit images in RAW format. But I have already clicked some images with Nikon D3200 in JPEG.Is there any way to convert JPEG to RAW format in Photoshop or ...
25
votes
12answers
40k views

Does simply opening and closing a JPEG file decrease image quality?

I've had quite a few photography classes, read many photography books, and screened many forums. And I can't find a consistent answer to this question. One "camp" says there is a loss of image quality ...
1
vote
3answers
426 views

Looking for a fuzzy image comparison tool (not online, but for harddrive search)

I am looking for a programm, that compares screenshots from documentaries with a (very small) number (around 600) of source screenshots (from the footage they originate from). The differences between ...
2
votes
4answers
832 views

Are there reasons to NOT use Adobe RGB in JPEG/TIFF files and CIELAB in TIFF files?

Back in the day of 256 color displays. We had web safe colors but today nobody uses 256 color systems. These days people are using either sRGB or Adobe RGB monitors and browsing the net with it. In ...
1
vote
3answers
144 views

What is this weird JPEG TIFF hybrid image and how can I save it from PS as a normal JPEG?

I have this JPEG image saved out of PS using "Save As" and selecting "JPEG". It's abnormally large for it's WxH resolution Mac Preview's info shows it as an uncompressed TIFF Trying to save it out of ...
22
votes
5answers
42k views

Is there a tool to check the file integrity of a series of images?

Sometimes when you're downloading an image and the connection breaks mid stream, you are left with a half downloaded image. If you try to view it you get the upper part of the image and the bottom ...
2
votes
2answers
569 views

Is editing metadata of a JPEG destructive to the image?

Is editing metadata of a JPEG destructive to the image? If I edit "File Info" > "Description" in Photoshop, then save.... am I causing the same image degradation as if I edited the image, then re save ...
1
vote
1answer
326 views

How to batch convert old NEF photos to JPEG/HEIF with in-camera processing look?

I have ~9k NEF photos from a Nikon D5000 that are currently taking up ~100GB. It's been 8+ years without me touching them, so I don't see a reason to assume I will ever process and edit them. I'd ...
0
votes
2answers
213 views

Does using M or S size JPEG helps with lowering noise on High ISO?

AFAIK, image sensors use demosaicing algorithms to reconstruct virtual image pixel from different sub-pixels. Does it mean, that on some cameras it could be profitable to use lower-resolution modes to ...
58
votes
1answer
18k views

Are “Windows Photo Viewer” rotations lossless?

Can I rotate lossily compressed photos that I view in Windows Photo Viewer without worrying about losing even more information to compression?
0
votes
3answers
3k views

How to recover the orginal name of picture file .JPG made by device?

I'm wonder how to recover the original name of picture which was made by device (for example Camera or phone)? Is it possible? Let's say that someone make a photo and then change name of the .JPG file ...
1
vote
1answer
476 views

How to compress RAW RGB 10-bit data?

This might seem like a general question, however I could not find an answer for. Specifically, I am using a CMOS image sensor that has the following general capabilities: Array Size: 1280 x 1024 (...
1
vote
0answers
273 views

Can I fix a corrupted jpeg file?

I have some jpg files on an old hard drive, and it appears they were corrupted somehow. When I try to open them it says it's an invalid file type in Windows. I first attempted a couple of repair ...
6
votes
2answers
3k views

How does the usual jpeg 0-100 quality settings translate into Photoshop's 0-12 quality setting?

JPEG encoders usually use a quality setting of 0-100, whereas Adobe photo software uses a 0-12 setting. Does anyone know how to convert between these? (I am actually not clear on whether the 0-100 ...

1
2 3 4 5 6